hvirtual/libmpeg3/mpeg3toc2.c

Go to the documentation of this file.

#include "libmpeg3.h"
#include "mpeg3protos.h"

#define TOCVERSION 3
#define TOCVIDEO 4

int mpeg3_generate_toc(FILE *output, char *path, int timecode_search, int print_streams)
{
        mpeg3_t *file = mpeg3_open(path);
        mpeg3_demuxer_t *demuxer;
        int i;

        if(file)
        {
                demuxer = mpeg3_new_demuxer(file, 0, 0, -1);
                if(file->is_ifo_file)
                {
                        int i;
                        mpeg3io_open_file(file->fs);
                        mpeg3demux_read_ifo(file, demuxer, 1);
                        mpeg3io_close_file(file->fs);

                        for(i = 0; i < demuxer->total_titles; i++)
                        {
                                fprintf(output, "TOCVERSION %d\n", TOCVERSION);

                                if(file->is_program_stream)
                                        fprintf(output, "PROGRAM_STREAM\n");
                                else
                                        fprintf(output, "TRANSPORT_STREAM\n");

                                fprintf(output, "PATH: %s\n"
                                        "SIZE: %ld\n"
                                        "PACKETSIZE: %ld\n",
                                        demuxer->titles[i]->fs->path,
                                        demuxer->titles[i]->total_bytes,
                                        file->packet_size);

/* Just print the first title's streams */
                                if(i == 0)
                                        mpeg3demux_print_streams(demuxer, output);

                                mpeg3demux_print_timecodes(demuxer->titles[i], output);
                        }

                        return 0;
                }
                else
                {
                        char complete_path[MPEG3_STRLEN];
                        mpeg3io_complete_path(complete_path, path);

                        fprintf(output, "TOCVERSION %d\n" 
                                "PATH: %s\n", TOCVERSION, complete_path);
                        if(file->is_program_stream)
                                fprintf(output, "PROGRAM_STREAM\n");
                        else
                                fprintf(output, "TRANSPORT_STREAM\n");

                        mpeg3demux_create_title(demuxer, timecode_search, output);
/* Just print the first title's streams */
                        if(print_streams) mpeg3demux_print_streams(demuxer, output);

                        if(file->is_transport_stream || file->is_program_stream)
                        {
                                fprintf(output, "SIZE: %ld\n", demuxer->titles[demuxer->current_title]->total_bytes);
                                fprintf(output, "PACKETSIZE: %ld\n", file->packet_size);
                        }

                        mpeg3demux_print_timecodes(demuxer->titles[demuxer->current_title], output);
                        return 0;
                }

                mpeg3_delete_demuxer(demuxer);
                mpeg3_close(file);
        }
        return 1;
}

/* Read the title information from a toc */
static int read_titles(mpeg3_demuxer_t *demuxer, int version)
{
        char string1[MPEG3_STRLEN], string2[MPEG3_STRLEN];
        long start_byte, end_byte;
        double start_time, end_time;
        float program;
        mpeg3_title_t *title = 0;
        mpeg3_t *file = demuxer->file;

// Eventually use IFO file to generate titles
        while(!feof(file->fs->fd))
        {
                char string[1024];
                int i = 0, byte;

// Scanf is broken for single word lines
                do{
                        byte = fgetc(file->fs->fd);
                        if(byte != 0 && 
                                byte != 0xd && 
                                byte != 0xa) string[i++] = byte;
                }while(byte != 0xd && 
                        byte != 0xa &&
                        !feof(file->fs->fd) &&
                        i < 1023);
                string[i] = 0;

                if(strlen(string))
                {
                        sscanf(string, "%s %s %ld %lf %lf %f", 
                                string1,
                                string2,
                                &end_byte, 
                                &start_time, 
                                &end_time,
                                &program);

//printf("read_titles 2 %d %s %s %ld %f %f %f\n", strlen(string),  string1, string2, end_byte, start_time, end_time, program);
                        if(!strncasecmp(string1, "PATH:", 5))
                        {
        //printf("read_titles 2\n");
                                title = demuxer->titles[demuxer->total_titles++] = mpeg3_new_title(file, string2);
                        }
                        else
                        if(!strcasecmp(string1, "PROGRAM_STREAM"))
                        {
        //printf("read_titles 3\n");
                                file->is_program_stream = 1;
                        }
                        else
                        if(!strcasecmp(string1, "TRANSPORT_STREAM"))
                        {
        //printf("read_titles 4\n");
                                file->is_transport_stream = 1;
                        }
                        else
                        if(title)
                        {
                                mpeg3demux_cell_t *timecode;
                                start_byte = atol(string2);
        //printf("read_titles 5\n");
                                if(!strcasecmp(string1, "REGION:"))
                                {
                                        timecode = mpeg3_append_timecode(demuxer, 
                                                title, 
                                                0, 
                                                0, 
                                                0, 
                                                0,
                                                1,
                                                0);


        //printf("mpeg3toc2 3\n");
                                        timecode->start_byte = start_byte;
        //printf("mpeg3toc2 4\n");
                                        timecode->end_byte = end_byte;
                                        timecode->start_time = start_time;
                                        timecode->end_time = end_time;
                                        timecode->program = program;
/*
 * printf("read_title %p end: %f start: %f\n", 
 *      timecode,
 *      timecode->end_time,
 *      timecode->start_time);
 */
                                }
                                else
                                if(!strcasecmp(string1, "ASTREAM:"))
                                        demuxer->astream_table[start_byte] = end_byte;
                                else
                                if(!strcasecmp(string1, "VSTREAM:"))
                                        demuxer->vstream_table[start_byte] = end_byte;
                                else
                                if(!strcasecmp(string1, "SIZE:"))
                                        title->total_bytes = start_byte;
                                else
                                if(!strcasecmp(string1, "PACKETSIZE:"))
                                        file->packet_size = start_byte;
//printf("read_titles 3\n");
                        }
                }
        }

        mpeg3demux_assign_programs(demuxer);
        mpeg3demux_open_title(demuxer, 0);
        return 0;
}

int mpeg3_read_toc(mpeg3_t *file)
{
        char string[MPEG3_STRLEN];
        int version;

/* Test version number */
        mpeg3io_seek(file->fs, 0);
        fscanf(file->fs->fd, "%s %d", string, &version);
        if(version != TOCVERSION && version != TOCVIDEO) return 1;
        switch(version)
        {
                case TOCVIDEO:
                        file->is_video_stream = 1;
                        break;
        }

/* Read titles */
        read_titles(file->demuxer, version);
        return 0;
}

---